How do I use the formula editor?
If you need to add mathematical expressions in your question and aren't sure how, read this guide.
TestGorilla's formula editor uses LaTeX input. The good news is you don't need to know LaTeX to create beautiful mathematical expressions. We simplify the process for you!
In the question editor, click the formula icon in the rich text editing bar (highlighted in red in the picture below).
This opens the formula editor (as shown below):
Here you can enter your mathematical expression. For example, typing...
e=mc^2
... results in the following:
To simplify your formula editing, we've added a few commonly used mathematical expressions. Simply click on one to use it in your formula.
For other expressions, you must use LaTeX codes. The following table should cover most of your needs. It's a good idea to bookmark this page so you can refer back to it as needed.
Description 
Command 

Output 
plus or minus 
\pm



multiplication (times) 
\times



multiplication (dot) 
\cdot



division symbol 
\div



simple text 
\text{text}



infinity 
\infty



dots 
1,2,3,\ldots



dots 
1+2+3+\cdots



fraction 
\frac{a}{b}



square root 
\sqrt{x}



nth root 
\sqrt[n]{x}



exponentiation 
a^b



subscript 
a_b



absolute value 
x



natural log 
\ln(x)



logarithms 
\log_{a}b



exponential function 
e^x=\exp(x)



deg 
\deg(f)



degree 
\degree



circle plus 
\oplus



circle times 
\otimes



not equal 
\ne



less than or equal to 
\le



greater than or equal to 
\ge



approximately equal to 
\approx



vector (arrow) 
\vec{v}



derivative vector 
\dot{\vec{v}}



vector (bold) 
\mathbf{v}



unit vector (hat) 
\hat{k’}



norm 
\vec{v}



element of 
\in



subset of 
\subset



subset of 
\subseteq



contains 
\supset



contains 
\supseteq



union 
\cup



intersection 
\cap



big union 
\bigcup_{n=1}^{10}A_n



big intersection 
\bigcap_{n=1}^{10}A_n



empty set 
\emptyset



power set 
\wp{S}



minimum 
\min



maximum 
\max



closure 
\overline{A}



derivative 
\frac{df}{dx}



derivative 
\f'



partial derivative 
\frac{\partial f}{\partial x}



limits 
\lim_{x\to \infty}



summation 
\sum_{n=1}^{\infty}a_n



product 
\prod_{n=1}^{\infty}a_n



integral 
\int_{a}^{b}



double integral 
\iint



triple integral 
\iiint



If you need more symbols, you can look them up in this pdf document (there are 14,283 of them in total). Please note that not all of those symbols are available in our editor. If you're missing something, please contact us here.